+86-21-58386256

Hafnium Sputtering Target, Hf Supplier | Stanford Advanced ...

Chemical Formula: Hf Catalog Number: ST0019 CAS Number: Purity: 99.9% Shape: Discs, Plates, Column Targets, Step Target, Custom-made Hafnium sputtering target is available in various forms, purities, sizes, and prices. Stanford Advanced Materials (SAM) has extensive experience in manufacturing and supplying hafnium sputtering targets of the highest, most durable quality at ...

WebElements Periodic Table » Hafnium » the essentials

Hafnium isotopes have several applications. Hf-180 is used for the production of the radioisotope Hf-181 while Hf-180 is used for the production of the radioisotope Ta-179, which has a medical application. The second isomer of Hf-178 (Hf-178m2) exhibits a very high excitation energy and it has been suggested for use in gamma ray lasers.

Hafnium-181 | Hf - PubChem

Hafnium-181. 1. Hafnium, isotope of mass 181. 181Hf (~181~Hf)Hafnium

Hafnium (Hf) - Atomic Number 72

Hafnium (Hf) is a silvery coloured metal that has the atomic number 72 in the periodic table. It is a Transition metal in Group 4. It has the symbol Hf. Hafnium was predicted to exist by Mendeleev but it was not until 1911 that Georges Urbain, the discoverer of Lutetium, thought he had discovered Hafnium but it was not to be.

Hafnium Hf (Element 72) of Periodic Table | Periodic Table ...

Hafnium Hf (Element 72) of Periodic Table. Hafnium is a ductile, lustrous, brilliant silvery metal, and It has an excellent corrosion resistance due to formation of a tough, impenetrable oxide film on its surface. Of all the elements, Hafnium and zirconium are of the most difficult to separate, Although their chemistry is almost identical ...

Hafnium, Hf, Ordnungszahl 72 | Institut für Seltene Erden ...

Allgemein. Hafnium ist ein chemisches Element mit dem Symbol Hf und der Ordnungszahl 72. Benannt ist es nach dem lateinischen Namen der Stadt Kopenhagen, Hafnia, in der das Element entdeckt wurde.Es ist ein silbergrau glänzendes, korrosionsbeständiges Übergangsmetall, das im Periodensystem in …

Hafnium - Wikipedia, den frie encyklopædi

Naturligt forekommende hafnium består af fem stabile isotoper; 180 Hf, 178 Hf, 177 Hf, 179 Hf og 176 Hf – dertil kommer en sjette, radioaktiv 174 Hf, som dog har en ekstremt lang halveringstid; 2·10 15 år. Dertil kendes 30 radioaktive isotoper, hvoraf 172 Hf er den …

Hafnium Hf-Edgetech Industries (A worldwide materials ...

Hafnium Pellets / Cylinder (Hf Pellets) Purity: 99.95%,, Zr < 1% or Zr<1.5%. Diameter: 1.5~5mm. Length: 3~10mm. Inquiry. Hafnium Oxide (HfO2) Evaporation Materials. 99.9% ~ 99.99%, 9mm dia x 3-6mm thk.

Mechanism of Activation of a Hafnium Pyridyl−Amide Olefin ...

We have investigated the olefin polymerization mechanism of hafnium catalysts supported by a pyridyl−amide ligand with an ortho-metalated naphthyl group. Ethylene−α-olefin copolymers from these catalysts have broad molecular weight distributions that can be fit to a bimodal distribution. We propose a unique mechanism to explain this behavior involving monomer modification of the catalyst ...

SAFETY DATA SHEET Hafnium (pieces)

as Hf Hafnium (pieces) Long-term exposure limit (8-hour TWA): OSHA 0.5 mg/m³ Long-term exposure limit (8-hour TWA): ACGIH 0.5 mg/m³ as Hf OSHA = Occupational Safety and Health Administration. ACGIH = American Conference of Governmental Industrial Hygienists. Immediate danger to life and health 50 mg/m³ Hafnium (pieces) (CAS: )

Hafnium – Wikipedia

Hafnium on siirtymäalkuaine, jonka lyhenne on Hf (lat. hafnium), järjestysluku on 72 ja CAS-numero . Olemukseltaan se on kiiltävä ja hopeanharmaa. Hafnium muistuttaa kemiallisilta ominaisuuksiltaan zirkoniumia ja sitä löytyy luonnossa yhdistyneenä zirkoniumyhdisteiden kanssa, mutta ei vapaana alkuaineena. Hafnium ei ole myrkyllistä. Se on hienojakoisena helposti syttyvää ja ...

US7547952B2 - Method for hafnium nitride deposition ...

US7547952B2 US11/420,928 US42092806A US7547952B2 US 7547952 B2 US7547952 B2 US 7547952B2 US 42092806 A US42092806 A US 42092806A US 7547952 B2 US7547952 B2 US 7547952B2 Authority US United States Prior art keywords hafnium precursor reaction layer nitrogen Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Hafnium (Hf) – RWMM

Hafnium (Hf) Regular price $195.00 Sale. Title Sold out Hafnium metal ingot - one troy ounce - .988 bullion Discovered by Dirk Coster and Gyorgy Hevesy in 1923 and named Hafnia (that Latin name for Copenhagen, where it was discovered) hafnium is a dense, …

Hafnium Wall Art | Fine Art America

Shop for hafnium wall art from the world's greatest living artists. All hafnium artwork ships within 48 hours and includes a 30-day money-back guarantee. Choose your favorite hafnium designs and purchase them as wall art, home decor, phone cases, tote bags, and more!

Hafnium – Wikipedia

Hafnium. Wikipedia (chū-iû ê pek-kho-choân-su) beh kā lí kóng... hexagonal close-packed (hcp) after Hafnia. Latin for: Copenhagen, where it was discovered. Hafnium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 72, hoà-ha̍k hû-hō sī Hf.

Hf – Hafnium

Hf – Hafnium Introduction Hafnium is a member of group 4 of the periodic table, along with Ti and Zr. It has an atomic number of 72, an atomic mass of 178, one oxidation state (+4) and five naturally occurring isotopes (176Hf, 177Hf, 178Hf, 179Hf and 180Hf), of which the latter is the most abundant at 35.44% of

Hafnium Pieces Periodic Element Tile | The Periodic ...

99.96% Pure Hafnium element sample in a PEGUYS Periodic Element tile, custom made for you. Each tile comes with a JMOL color coded label on the reverse displaying all the essential periodic element information. (Atomic Number, Element Symbol, and Atomic Mass). We have produced an entire range of elements in different m

- - Asian Metal

。,,,。、,。,。

Buy Hafnium (Hf) online - Advent Research Materials

Hafnium. Advent Research Materials Ltd supplies Hafnium in foil, sheet and wire form in various different quantities. Hafnium is a ductile metal with a brilliant silver lustre. It is found in all minerals containing zirconium. These two metals show greater similarities in properties than between any other metals in the periodic table, and hence ...

The mineralogy of Hafnium - Mindat.org

Most widespread minerals containing Hafnium; This list of minerals containing Hafnium is built from the mindat.org locality database. This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of Hafnium mineral species.

Hafnium in the agdb2

Hf_ppm_ES_SQ: Hafnium, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography. chemistry: hf_ppm_es_sq. Hf_ppm_MS_AR_P: Hafnium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after partial digestion with aqua regia.

Hafnium – Wikipedie

Hafnium. Hafnium (chemická značka Hf, latinsky Hafnium) je šedý až stříbřitě bílý, kovový prvek, chemicky velmi podobný zirkoniu. Hlavní uplatnění nalézá jako složka některých speciálních slitin . jednotky SI a STP (25 °C, 100 kPa).

Hafnium Metal Rod Hf Crystal Powder | CAS ...

Hf-Ta alloy is raw material for chisel tool steel and resistance material. Hf-10% Nb alloy could be as nozzle of moon shuttle. Hf-2% TaWu alloy could be as protection coating of spacecraft. Hafnium powder can be thruster of rocket. it is a kind of additive for hydraulic oil, which prevent the volatilization when high-risk operations.

Hafnium – Wikipédia

Hafnium Hafnium je chemický prvok v periodickej tabuľke, ktorý má symbol Hf a protónové číslo 72. V zemskej kôre je zriedkavý, jeho obsah sa odhaduje na 4,5 mg/kg. V morskej vode je jeho koncentrácia taká nízka, že ju nie je možné určiť ani najcitlivejšími analytickými technikami. Udáva …

Hafnium – Wikipedia

Hafnium ble oppdaget av danske Dirk Costner og ungarske George von Hevesy i 1923 i København, Danmark, ved hjelp av røntgenspektroskopi av en prøve med norsk zirkonium-malm. Funnet bekreftet dermed Mendelejevs antagelser fra 1869. ... 176 Hf (5,26%), 177 Hf (18,6%), ...

: Hafnium Metal 99.9% Pure Element 72 Hf ...

Hafnium Metal 99.9% Pure Element 72 Hf Chemistry Sample - Science experiment - Chemistry kit - Periodic Table, Element Collection, Transition Metals Brand: Chemistry Cabinet. 5.0 out of 5 stars 5 ratings. Currently unavailable. We don't know when or if this item will be back in stock. This ...

Zirconium : Hafnium ratios in some igneous rocks ...

The progressive decrease in the Zr/Hf ratio is consistent with the intrusive sequence and the general decrease of K/Rb with progressive evolution (JACOBSON et al., 1958 and BUTLEB et al., 1962). Zirconium: hafnium ratios in some igneous rocks 169 Two biotite-granite samples, however, show some instructive features.

Technical data for the element Hafnium in the Periodic Table

178 Hf. 27.28%. 179 Hf. 13.62%. 180 Hf. 35.08%. Notes on the properties of Hafnium: Specific Heat: Value given for solid phase. Up to date, curated data provided by Mathematica 's ElementData function from Wolfram Research, Inc.

Chemical element: Hafnium (Hf) - Convert Units

Hafnium Tetrachloride HfCl4 Hafnium Boride HfB2 Hafnium Bromide HfBr4 Hafnium Carbide HfC Hafnium Fluoride HfF4 Hafnium Hydride HfH2 Hafnium Iodide HfI3 Hafnium Nitride HfN Hafnium Oxide HfO2 Hafnium Phosphide HfP Hafnium Sulfate Hf(SO4)2 Hafnium Sulfide HfS2 Hafnium Selenide HfSe2 Hafnium Orthosilicate HfSiO4 Hafnium Silicide HfSi2